Parametric study of the coupling aperture in CPW–fed microstrip antennas

Giauffret, L.; Laheurte, Jean‐Marc

doi:10.1049/ip-map:19990339

Cited by 11 publications

(7 citation statements)

References 2 publications

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“…As the coupling slot length increases, the resonant frequency decreases as reported in [7]. Therefore, altering the length of the coupling slot will shift the resonant frequency.…”

Section: Introductionmentioning

confidence: 75%

Switchable multi-band coplanar antenna

Mansour¹,

Hall²,

Gardner³

et al. 2011

2011 Loughborough Antennas &Amp; Propagation Conference

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A switchable microstrip patch antenna for multifrequency operation is presented. The antenna is fed by coplanar waveguide via capacitive coupling slot. The antenna allows an easy reconfigurability of the frequency band of operation by incorporating switches in the coupling slot. The resonant frequency of the antenna can be adjusted by setting the switches on or off. The antenna is capable of switching between 1.6, 1.8, 2.0 and 2.4 GHz. Measurements show that the realized gain is 5.2, 4.4 and 4.9 dB for the 1.6, 2.0 and 2.4 GHz frequency bands respectively. Both simulation and measurement results indicate that the proposed antennas demonstrate very good impedance matching, stable radiation patterns and reasonable gain at all frequency bands.

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“…As the coupling slot length increases, the resonant frequency decreases as reported in [7]. Therefore, altering the length of the coupling slot will shift the resonant frequency.…”

Section: Introductionmentioning

confidence: 75%

Switchable multi-band coplanar antenna

Mansour¹,

Hall²,

Gardner³

et al. 2011

2011 Loughborough Antennas &Amp; Propagation Conference

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show abstract

“…The length of the slot affects the resonance frequency but has only a small effect on the return loss. As the slot length increases, the resonant frequency decreases as reported in [17,18]. Therefore, altering the length of the coupling slot will shift the resonant frequency.…”

Section: Capacitively Coupled Patchmentioning

confidence: 80%

Slot-Fed Switched Patch Antenna for Multiple Frequency Operation

Mansour

Hall

Gardner

et al. 2013

PIER C

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A switchable microstrip patch antenna for multi-frequency operation is presented. The antenna is fed by a coplanar waveguide via capacitive coupling slot. The antenna allows easy reconfigurability of the frequency band of operation by incorporating switches in the coupling slot. The resonant frequency of the antenna can be adjusted by setting the switches on or off. Two prototypes are presented. The first incorporates two PIN diodes and capable of switching between four frequency bands, over a frequency range of 1.23 : 1. The second prototype incorporates four PIN diodes and is capable of switching between eight frequency bands, over a frequency range of 1.5 : 1. The structure has a compact and simple biasing circuit. Simulation and measurement indicate that the proposed antennas demonstrate very good impedance matching, stable radiation patterns and good gain at all frequency bands.

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“…Now the MEI measuring functions are equal to Haar wavelet coefficients, and the Haar coefficients can be computed efficiently with the use of the pyramid scheme as shown in [7]. …”

Section: Wavelet Mei Methodsmentioning

confidence: 99%

“…If the current I a flowing along the arms of the coupling slot is neglected, the antenna can roughly be modeled by the schematic depicted in Figure 6, where I is the feeding current. The assumption I a Ϸ0 is reasonable because the field is mainly concentrated in the CPW end [7] for small values of R d and also because the arms of the coupling slot are long enough to avoid a diode shorting. It is clear from Figure 6 that the ratio P d /(P loss ϩ P rad ) is proportional to R d .…”

Section: Gain Measurementsmentioning

confidence: 99%

Microstrip antenna controlled by p‐i‐n diodes: Influence of the bias current on the antenna efficiency

Laheurte

Tosi

Dubard

2002

Micro & Optical Tech Letters

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[1]: When the inclusion and the host mediums are interchanged but the respective volume fractions remain invariant, the estimated constitutive properties of the homogenized composite change. The same asymmetry is highly pronounced when the inclusions are nonspherical. In contrast, (7) clearly shows that the Bruggeman estimates are unaffected by the interchange of the two component mediums. Comparing Figures 1-3

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Parametric study of the coupling aperture in CPW–fed microstrip antennas

Cited by 11 publications

References 2 publications

Switchable multi-band coplanar antenna

Switchable multi-band coplanar antenna

Slot-Fed Switched Patch Antenna for Multiple Frequency Operation

Microstrip antenna controlled by p‐i‐n diodes: Influence of the bias current on the antenna efficiency

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